One alleged cause for procrastination in the examination and adjustment of our claims arises from an obstacle which it is the duty of the Spanish Government to remove. Whilst the Captain-General of Cuba is invested with general despotic authority in the government of that island, the power is withheld from him to examine and redress wrongs committed by officials under his control on citizens of the United States. Instead of making our complaints directly to him at Havana, we are obliged to present them through our minister at Madrid. These are then referred back to the Captain-General for information, and much time is thus consumed in preliminary investigations and correspondence between Madrid and Cuba before the Spanish Government will consent to proceed to negotiation. Many of the difficulties between the two Governments would be obviated and a long train of negotiation avoided if the Captain-General were invested with authority to settle questions of easy solution on the spot, where all the facts are fresh and could be promptly and satisfactorily ascertained. We have hitherto in vain urged upon the Spanish Government to confer this power upon the Captain-General, and our minister to Spain will again be instructed to urge this subject on their notice. In this respect we occupy a different position from the powers of Europe. Cuba is almost within sight of our shores; our commerce with it is far greater than that of any other nation, including Spain itself, and our citizens are in habits of daily and extended personal intercourse with every part of the island. It is therefore a great grievance that when any difficulty occurs, no matter how unimportant, which might be readily settled at the moment, we should be obliged to resort to Madrid, especially when the very first step to be taken there is to refer it back to Cuba. The truth is that Cuba, in its existing colonial condition, is a constant source of injury and annoyance to the American people. It is the only spot in the civilized world where the African slave trade is tolerated, and we are bound by treaty with Great Britain to maintain a naval force on the coast of Africa, at much expense both of life and treasure, solely for the purpose of arresting slavers bound to that island. The late serious difficulties between the United States and Great Britain respecting the right of search, now so happily terminated, could never have arisen if Cuba had not afforded a market for slaves. As long as this market shall remain open there can be no hope for the civilization of benighted Africa. Whilst the demand for slaves continues in Cuba wars will be waged among the petty and barbarous chiefs in Africa for the purpose of seizing subjects to supply this trade. In such a condition of affairs it is impossible that the light of civilization and religion can ever penetrate these dark abodes.